Slack message scheduler
Your next Slack post starts here.
Create your Slack content alongside your other channels. Refine the caption, plan the timing, and see how each post was delivered, all from one workspace.
The rules
The Slack rules Postauto works to
Taken from Slack's own developer documentation, not from a marketing page.
| Content types | Channel messages |
|---|---|
| Media rules | Files upload to the channel alongside the message |
| Account requirement | A Slack app you create at api.slack.com/apps for a workspace you administer |
Account requirements
A Slack app you create at api.slack.com/apps for a workspace you administer.
Departure
What happens to a Slack post
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In the composer
A Slack preview while you type
Write once, tick your Slack account alongside anything else you post to, and the card beside the draft shows the post the way Slack will. Anything Slack would refuse is said before you schedule, not the next morning.
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On the board
Departures, not a spreadsheet of rows
Scheduled posts line up by time. You see what leaves next, what already departed, and what needs a look, without opening anything.
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After it leaves
A Slack result of its own
Every channel reports separately. A Slack rejection does not stop the other networks, and the network's own error text is shown on the board in plain language.
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At rest
Credentials encrypted with AES-256-GCM
Your Slack credentials are encrypted before they reach the database, are never logged in plaintext, and are decrypted only at the moment of publishing.
Per-channel results
You can see what each network did
One post, one row per channel. Departed channels carry a link to the live post; a failed channel carries the network's own error text, so you know whether to fix the wording, the media, or the connection.
Send the same draft to
Tick these next to Slack in the composer and they all leave at the same time.
Slack scheduling questions
What can I publish to Slack with Postauto?
Channel messages. Files upload to the channel alongside the message.
Can one draft go to Slack and other networks at once?
Yes. Write it once, tick Slack beside the other accounts, and each network shows its own preview before anything leaves. A channel can carry its own wording without touching the rest.
What do I need to connect Slack?
A Slack app you create at api.slack.com/apps for a workspace you administer.
Where do I connect my Slack account?
Open Channels in your workspace to see connection options. A Slack app you create at api.slack.com/apps for a workspace you administer.
Anything specific to Slack I should know?
Slack folds a long message behind Show more; the preview shows the message the way the channel will see it. The bot has to be invited to a private channel before it can post there.
Can I post to Slack and other networks at the same time?
Yes. One composer publishes to any mix of your connected channels, and each network's limits are checked per selected channel. Every channel departs at the same scheduled time.
What happens if a Slack post fails?
Each channel reports its own result. If Slack rejects a post, your other selected networks still publish, the post is marked partial, and the board shows a readable error for the failed channel.
Can I try it before paying?
Yes. Every plan starts with a 14-day free trial. You choose a plan and give a card at checkout, nothing is charged until the trial ends, and cancelling before then costs nothing.
Next departure
Put Slack on the board
Build your publishing workflow in one workspace. Every plan starts with 14 days free.